Wednesday, 21 February 2018


objectweight in airapparent weight in waterbuoyant force (weight in air-apparentpulley weight in airlength of string
weight 40.50.430.07140.5
weight 510.90.9201
weight 621.750.25502
weight 72.051.750.3602.05
weight 98.758.250.51008.75

Wednesday, 14 February 2018

Lab design - electric charge

1. infer why did you rub the balloon on your sweater? Predict what might have happen if you simply touched the balloon in you sweater instead of rubbing it.
ans: because the balloon will have a charge when the balloon come close to water fall then water that fall down will bent follow the balloon curve

2. key concept why do you think the balloon interacted the way it did with you sweater and the stream water?
ans: because the balloon have a electric charge when it rub with sweater.

Wednesday, 10 January 2018

  start at art room to m 6/601  

-18 steps south
-3 steps west
-7 steps south
-4 steps east
-10 steps south
-23 steps east ( i cant walk through the car)
-7 steps south
-1 steps east ( i cant walk through the mirror)
-16 steps north
- Turn to your east
- upper level x2
-24 steps north

-3 steps west

Wednesday, 15 November 2017

r+g = orange
r+b = purple
b+g = dark blue
r+g+b = white

Thursday, 14 September 2017

Crystallization of Milk

1)  why do we add salt to the ice?
to make ice not melting or turn to water quickly

2)   why do we add the cookies and other things, only after the milk has frozen slightly?
to make cookie and other things freeze with milk easily

3)  what are two factors that affect the freezing you think?
salt and shaking 

4)  why do you need a bit of air in the bag?
to make milk turn frozen and move around easily



Wednesday, 7 June 2017

stone lab

sample number
rock                    weight(g)                volume(ml)               densty(g/ml)
3                            28.5                          35                            0.814
6                            110                           50                               2.2
5(big)                    115                            41                             2.805
5(small)                 45.5                          22                            11.159
2                           136                            50                             2.72
X                          146.6                         58                             2.528
1                           245.5                        69.5                           3.532

calculate the density of each of your mineral samples. how could you use the densities to identify the mineral??
ans:  density is a value to a pure mineral so it is a freat way to identify a sample

Thursday, 25 May 2017


1. Climate change
   climate refer to the average weather condition of an area. It is a truism that any      changes in climatic condition may affect agricultural production, pattern of              rainfall, wind flow and migration of animal.

2. Global warming   
     Continuous increase in the emission of Co, from different sources into the              atmosphere affects the heat balance of the earth. Continuous increase in the        concentration of green house gases in the atmosphere trap more heat and            prevents the heat from the earth’s surface 

3. Greem house effect
    Green house effect is another environmental crisis facing our world.                       Chlorofluoro carbons (Co2) carbon dioxide, Methane (CH4) and Nitrous oxide       (N,0) are called as green house gases.